B7 具备运用现代技术对生物大分子进行分离纯化、检测分析和分子（基因）操作的能力；
B7 To have the ability for purification of bio-macromolecules, as well as related detection analysis and genetic operation.
介绍了近年来重组蛋白质的常用表达系统以及各种分离纯化技术等研究和应用的进展情况。
The study and application were introduced on the expression system in common use and separation and purification technique of recombinant proteins in recent years.
综述了近十年来纳滤膜技术在氨基酸和多肽分离与纯化方面的研究进展。
This article describes the research progresss in the last ten years of nanofiltration techniques for the selective separation and purification of amino acids and peptides.
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